Characterised by bitter resentment (11)
I believe the answer is:
acrimonious
(Other definitions for acrimonious that I've seen before include "Hostile" , "Angry, bitter" , "Producing bad feelings" .)
I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.